Nerve stimulator-guided paravertebral blockade combined with sevoflurane sedation versus general anesthesia with systemic analgesia for postherniorrhaphy pain relief in children -: A prospective randomized trial

Background: Improvement of the duration of postoperative analgesia is desirable in children undergoing inguinal hernia repair. Methods: Fifty children aged 5-12 yr were prospectively randomized to receive either paravertebral nerve blockade or general anesthesia (sevoflurane-fentanyl-nitrous oxide-oxygen) combined with standardized postoperative systemic analgesia, both combined with light sevoflurane anesthesia, for inguinal hernia repair. Results: Mean pain scores were significantly lower in paravertebral nerve blockade patients compared with patients treated with systemic analgesia during the entire 48-h observational period (P < 0.05). Analgesic consumption was significantly higher in the systemic analgesia group (88%) compared with the paravertebral nerve blockade group (32%) (P < 0.001). Parental satisfaction was significantly higher (80 vs. 48%; P < 0.05) and same-day discharge was possible in a higher proportion of patients in the paravertebral blockade group (80% vs. 52%; P < 0.05). Conclusions. Paravertebral nerve blockade was associated with improved postoperative pain relief;, reduced analgesic consumption, and faster hospital discharge compared with a systemic analgesia protocol in children undergoing herniorrhaphy.